Hwiun from the Celestial Realm, despite being immortal, fell into the sin of excessive lust. Uryeong, a goblin from Hell, committed the sin of being overly kind. As a consequence, they were both banished to the human realm and tasked with carrying out responsibilities suitable to their original roles. In the human realm, there lived a girl named 'Miji', who was raised by a bumbling and foolish father and had never even imagined interacting with men. Due to this overbearing control, she ironically developed an intense yearning for the opposite sex. Observing this, Hwiun and Uryeong resolve to use her to achieve their individual tasks.